pci: add config options for MSI-INTx translation in HVM
Add a config file option 'pci_msitranslate' to enable MSI-INTx translation
in HVM, and also a per-device option 'msitranslate' to allow device based
overriden
Signed-off-by: Qing He <qing.he@xxxxxxxxx>
---
diff -r 82b05ac013fc -r b0a4862c9018 tools/python/xen/xend/XendConfig.py
--- a/tools/python/xen/xend/XendConfig.py Thu Jan 08 02:09:19 2009 +0800
+++ b/tools/python/xen/xend/XendConfig.py Thu Jan 08 02:13:31 2009 +0800
@@ -166,6 +166,7 @@
'guest_os_type': str,
'hap': int,
'xen_extended_power_mgmt': int,
+ 'pci_msitranslate': int,
}
# Xen API console 'other_config' keys.
diff -r 82b05ac013fc -r b0a4862c9018 tools/python/xen/xend/server/pciif.py
--- a/tools/python/xen/xend/server/pciif.py Thu Jan 08 02:09:19 2009 +0800
+++ b/tools/python/xen/xend/server/pciif.py Thu Jan 08 02:13:31 2009 +0800
@@ -95,6 +95,9 @@
back['num_devs']=str(pcidevid)
back['uuid'] = config.get('uuid','')
+ if 'pci_msitranslate' in self.vm.info['platform']:
+
back['msitranslate']=str(self.vm.info['platform']['pci_msitranslate'])
+
return (0, back, {})
diff -r 82b05ac013fc -r b0a4862c9018 tools/python/xen/xm/create.py
--- a/tools/python/xen/xm/create.py Thu Jan 08 02:09:19 2009 +0800
+++ b/tools/python/xen/xm/create.py Thu Jan 08 02:13:31 2009 +0800
@@ -318,11 +318,14 @@
backend driver domain to use for the disk.
The option may be repeated to add more than one disk.""")
-gopts.var('pci', val='BUS:DEV.FUNC',
+gopts.var('pci', val='BUS:DEV.FUNC[,msitranslate=0|1]',
fn=append_value, default=[],
use="""Add a PCI device to a domain, using given params (in hex).
- For example 'pci=c0:02.1'.
- The option may be repeated to add more than one pci device.""")
+ For example 'pci=c0:02.1'.
+ If msitranslate is set, MSI-INTx translation is enabled if possible.
+ Guest that doesn't support MSI will get IO-APIC type IRQs
+ translated from physical MSI, HVM only. Default is 1.
+ The option may be repeated to add more than one pci device.""")
gopts.var('vscsi', val='PDEV,VDEV[,DOM]',
fn=append_value, default=[],
@@ -588,6 +591,11 @@
fn=set_bool, default=None,
use="""Do not inject spurious page faults into this guest""")
+gopts.var('pci_msitranslate', val='TRANSLATE',
+ fn=set_int, default=1,
+ use="""Global PCI MSI-INTx translation flag (0=disable;
+ 1=enable.""")
+
def err(msg):
"""Print an error to stderr and exit.
"""
@@ -672,6 +680,9 @@
d = comma_sep_kv_to_dict(opts)
def f(k):
+ if k not in ['msitranslate']:
+ err('Invalid pci option: ' + k)
+
config_pci_opts.append([k, d[k]])
config_pci_bdf = ['dev', ['domain', domain], ['bus', bus], \
@@ -878,7 +889,7 @@
'sdl', 'display', 'xauthority', 'rtc_timeoffset', 'monitor',
'acpi', 'apic', 'usb', 'usbdevice', 'keymap', 'pci', 'hpet',
'guest_os_type', 'hap', 'opengl', 'cpuid', 'cpuid_check',
- 'viridian', 'xen_extended_power_mgmt' ]
+ 'viridian', 'xen_extended_power_mgmt', 'pci_msitranslate' ]
for a in args:
if a in vals.__dict__ and vals.__dict__[a] is not None:
diff -r 82b05ac013fc -r b0a4862c9018 tools/python/xen/xm/xenapi_create.py
--- a/tools/python/xen/xm/xenapi_create.py Thu Jan 08 02:09:19 2009 +0800
+++ b/tools/python/xen/xm/xenapi_create.py Thu Jan 08 02:13:31 2009 +0800
@@ -1041,6 +1041,7 @@
'vhpt',
'guest_os_type',
'hap',
+ 'pci_msitranslate',
]
platform_configs = []
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